The Maxi Travel Button Hook with Zipper Pull enables those who lack the use of one hand, as well as those with issues relating to hand or finger strength or dexterity, to hook buttons. And it's easy to use: simply pass the loop through the hole, hook it over the button and pull the button through the hole. This model also includes a zipper pull that makes it easier to open and close zippers. Ideal tool for those with Arthritis.